Knee pad



FIG. 1 is a lower perspective view on a reduced scale of a knee pad showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a side elevational view there; and,

FIG. 7 is a side elevational view thereof as it is applied to a wearer.

The broken lines in all views are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a knee pad, as shown and described. 